Appabattts tob pbodttcing abtigueb by electbolytic deposition



Nov. 20, 1928; Re. 17,141

G. ROSENQVIST APPARATUS FOR PRODUCING ARTICLES BY ELECTROLYTIC DEPOSITION Original Filed Feb. 24, 1925 Scrap C'ap er Fan /n9 Anode Mefa/ Tube 10 Forminy Conducf'ar Maid! Mo Id 5 fbrmin Cafhad 5 6g 43 52 27 36 o O 30 26 42 7 a x 32 J: f x [7 #31 33 Q A J v 250 O O 264 E F J INVENTOR Reiseued Nov. .20, 1928.

UNITED STATES. PATENT orr ce.

comma aosanovrs'r, or rrr'rsnu'norr, rmmmvmra.

APPARATUS IOR PBODUCI FIG ARTIGLIB BY ELEC'IBLOLTTIG Original Io. 1,594,508.11ated August 3,

. refine filed This invention relates to im rovements in apparatus for producing meta lic' articles by meansof electrolytic de osition, one of the objects of the invention 1 eing to provide an a paratus of this character in which the solumold.

t1on comes in-contact only with the interior of the metal mold, whereby the necessity for covering .the exterior of the mold with in-. sulating material is avoided.

A further object of theinvention is to provide an apparatus of the character set forth,

in which the scrap metal ,anode can easily be washed off and in which the solution isalways filtered and clear when itcomes to the metal A further objectof the invention is to provide an apparatus in which theinterior surface of the de osited metal is ground,'polished I and hardene during the depositing process.

With the foregoing and other ob ects in view, which will appear as the description roceeds, the invention consists in the novel eatures of construction and combination'of arts which will be more fully described here- 1nafter and particularly pointed out in the claims. 1

In the drawings accompanying and forming part of this specification,

Fig. 1 is a vertical central section through an apparatus embodying the features of the present invention;

Fig. 2 is a similar view of amodified form of apparatus; and

Fig. 3 is an end view of the apparatusshown in Fig. '2. I

The same characters of reference designate the same parts in the-diiferent figures of the drawings. In apparatus of this general character, heretofore used, it has, been the practice to 1mmerse the entire mold in a tub containing metal mold or electrolyte. Under the exterior of the covered with inconnection with nnrosrrron.

1926, Serial life. 11,000, filed Iebrnary 24, 1925. [Application for Layout 11, 19,27. Serial Io. 212,328.

reason of the fact that the solution never comes in contact therewith.

Referring first to Fig. 1 designates the container foran electrolytic solution 2, said containerbeing preferably formed at its top'to provide a shoulder 3 for supporting a p atform platform 1s a mold 5 of'metal or other perof the drawings, 1

manent materlal which may be of cylindrical octagonal, hexagonal or any other desired form 1n cross section, and is preferably made of a plurality of sections secured together.

Within the mold, in concentric relation there-Y with, is a so-called basket 6 formed of perforated lead or other acid-resisting porous material for the reception of scrap copper forming the anode. The mold '5 is provided at the. exterior thereof with a terminal 8 for connection by means-of a wire 9 with one terminal of a suitable source of electric current. Within the basket 6 is supported on the platform 4 a tubular member 10 of conductmg metal, the upper end of which extends above the top of the basket and has attached thereto in any suitable manner a wire 11 for source'ofcurrent. A pump 12 of any suit-able construction is disposed in any convenient position for pumping the container-'1 into the basket 6, said pump comby means of a pipe 13 which extends to a point near the bottom of the container. A flexible tube 15 of 1 rubber or other. material communica tes with the delivery end of the pump and is bent at its upper end so as to deliver the solution upon the scrap copper within the basket 6. The bottom of thebasket is provided with an outlet nipple 16 adaptedv to form a connection hose extends to the'bottom of the container 1 and is provided in its lower end with a plug having a comparatively small delivery open ing therein for promoting circulation of the solution at the bottom of the container. The metal mold 5 is provided near its upper end with an overflow opemng'having a nipple 19 to which may be attached a pi or hose, not shown, for returning the surp us solution to the container 1.

The operation of the is as follows:

The basket 6 being filled device so far described with scrap copper 4. I Mounted on the the other terminal of thefor a rubber hose 17, which solution from the 'municating with the interior of the container meg ' on the inner surface of the bearing for receiving'a'rod orshaft 24,

' the level indicated by On the other hand,

inaft and the current turned on, the pump is started and the operation thereof is contmueduntil the height of the solution in the basket reaches the line a, the solution penetrating throu the basket until it reaches the level in 'cated by the lineb in the metal mold. Theoperation of the pump is regulated so as to maintain the solution at these levels. The solution acts on. the scrap copper in the basket and the deposit is made metal mold 5. After the deposition is completed, the sections of the mold may be disconnected one from the other and removed, and if the molded article is in a single piece the rubber i' e 15 is swun aside so as to ermit the artic e to-be lifte from the plat orm without disturbing the basket 5 and the central contact member 10. if the article is madein a number of pieces corresponding with the section of the mold, each piece is removed with the section of the mold on which it was deposited as will be more fully'described hereer.

- When it is desired to wash the scrap metal in the basket, the rubber hose 17 is lifted out of the tub 1 so that it will drain outside thereof. Fresh water may then be sprayed over the scrai copper in the basket drain through the rubber hose.

Referring now to Figs. 2 and 3, I have illustrated therein a mold which is capable of rotation. To this enda pair of standards or brackets 21 and 22 are supported on a base 23, one at each end thereof, said standards being each provided at its'upper endwith a preferably of stainless steel, the rod being intended tobemaintamed against rotation in Upon that portion of the rod 22 is supported a basket'6, of perforated lead or other porous material, therod being pro.

vided with a pair of collars or shoulders 25.

for maintaining thebasket against axial movement,-said'basket' being adapted to contam scrap copper-I7.v The collar at the left of Fig. 2 is s own threaded on the rod so as to permit removalzof-the basket. Outside of the ends of 26 of ,ebonite or otherzsuitable insulating ma-.

terial are mounted on'the rod 24, said disks.

formin heads or ends. oi a'drum or mold,

' the'bo y of. which is made of metal and is sections each having a pair of Y110 Secured to the disks by means of screws 27 or in any other suitable manner. The body of the mold, like that 0t Fig. 1, may be either in a single piece or made up of a luralit of ongitud inal flan es 5 extending out om its side edges, the anges of each section being bolted to the flanges ofco'ntig'uous sections as shown in Fig.3. The drum may also'be cylindrical, octagonal or any other desired form in cross section. .When it is desired touse themold and allowed to.

, being ada to that shown in Fig.

- 2 and 3, I have the basket a pairof disks 26 and v1n igs..2' and secured tothe baseand the bea each other by a layer ofiinsulating material 28, while if it is desired to form asingle hollow article the insulating layers may. be omitted. For rotatin themold, a pulley 29 is mounted on the ro and is secured to the disk 26, a spacing Washer 30 being interposed between the pulley and disk. A second pulley 31 is mounted for rotation on the rod 24 in juxtaposition to the pulley 29. Rotary motion may thus be imparted to the mold by means of a belt connection from any suitable source of power, from the fast ulley 29 to the loose pulley 31, the rotation oil the mold may be discontinued at any time.

For establishin electrical connection between the mold and a source of current, a ring contact member 32 is carried by an insulating disk 33 which may be disk 26 or secured thereto in any' suitable manner. The ringv 32 is electrically connected with the mold 5b'y a short wire 34 which passes through an 26. A contact brush 35 36 mounted on the standard 21, is held in contact with the ring 32, and is connected by a wire 37 with one pole of the source of current not shown, the other pole being electrically connected in rod 24, as for instance by a wirel.

For supplyin the solution to the scrap copper in the has et, a tube 39 passes through a bore in one end of the rod 24 and communicates with the interior of the basket, said tube ted to-communicate'at its outer e delivery 1 for tion from a container, whi e a tube 40 'communicates through a bore in the opposite end of the rod, with the space between the basket end with t and the disk 26, for returning the surplus so- V lution to the tu In the form of the apparatus shown in Figs. rovided means for inding and polishing t e interior'surface 0% posited metal. Th s means comprises'a mass of granular material 41, which-may consist 115' of glass balls-or otherhard substances which, when the mold is rotated. around the basket, will abrade the formed integral with the opening in the disk carried by a bracket the de while, by shifting the belt any suitable manner with the v end of a. pump similar Y umping the soluv surface of the deposited metal and thus 'grind and polish the inside thereof and remove an unevenness.

' 'As hereinbe ore stated, th'e mold may be other form in cross sectipn, or a-number of separate. art cles corresponding with the number. of sections/of the mold. When thearticle is formed in be made for ap aratus.

.per' endofthis standard is split, so "that on arsed to form a-single article of cylindrical or that the standard 21 is made of substantial i an electro ytic solution,

thickness so as to support apparatus when the standard 22 has been swung out of supporting-position.

For afi'ording access to the interior of the basket to permit the same to be'filled, a portion 42 thereof is made removable, and is rovided with a pair of latches 43 for retain m it in position when closed. aving thus described my invention,

I claim is:

com rising in combination a container for an e ectrolytic solution, a metal mold capable of holding a solution disposed outside of said container, a support disposed within said metal mold and adapted to contain scrap copper, means for causing solution irom said container through said support and means for electrically connectiIlg said scrap copper and mold with a source of current. I I

2. An apparatus of the character described, comprisin", in combination, a container for a-metal 'mold disosed outside of said container, said mold being formed of a plurality of sections, detachably connected together, a basket dis: posed within said metal mold and adapted to. contain scra copper, means for causing a circulation oi the solution from said container through said basket, and means for electrically connecting said scrap copper and mold with a source of current.

3. An apparatus of the character described,

comprising in combination, a container for an electrolytic solution,

a metal mold disposed outside of said container, said mold being formed of a plurality of sections detachably connected together, a basket disposed, Within said metal mold and adaptedto contain scrap swung toward the right of Fig. 2, free of the rod 24. Thereupon, after the weight of the upon What- 1. An apparatus ofthe character described,

the circulation of the.

'c'oppen' a forftransferring' the solution from said container to the interior of said basket, means for. returning said container, and means v connecting said scrap copper and moldwith a source of current.

4. Apparatus for means of electrolytic deposition, comprising, in combination a container for an electrolyticsolution, ing a solution and consisting of a plurality of sections, an anode suspended in said mold, means for circulating an electrolytic solution from said container through said mold to cov-. er the anode and the inner surface of the mold which the deposition is to be made, and means for electrically connecting said anode and mold with a source of current.

a hollow metal mold capable ofhold- 6 the solution to for electrically,

. producing articles by 5. Apparatus for producing articles by electrolytic deposition comprising, in' combination a container for an electrolytic solution, a hollow 'mold capable of holding a solution disposed outside of said container, an anode suspended in said mold, a pump for circulating the solution from said container said mold, means for maintaining the solu through I tion in the mold'at a predetermined level and means for electrically connecting said anode and mold with a source of current.

6. Apparatus for producing articles of electrolytic deposition comprising in combination a container for ,an electrolytic solu tion, a liquid holding receptacle disposed out side of said container, a substantial portion constiof the inner walls of said receptacle conductive mold surface tuting an electrical for. receiving a deposit, a support within the receptacle holding pieces of metal to be deposited, means for circulating the electrolytic solution from the container into'said recepta cle and between said pieces of metal and from vthe receptacle back into the container, means for electrically constituting the pieces of metal held by said support, an anode, and the electrical conductive mold surfaces, a cathode;

In testimony whereof I have signed my name to this specification.

GU'NNAR nosENQvis'r. 

